This smart pairing of a white horizontal striped polo neck sweater and dark brown chinos is super easy to put together in no time, helping you look awesome and prepared for anything without spending a ton of time searching through your closet. To bring a more relaxed aesthetic to your outfit, complement this ensemble with a pair of brown canvas high top sneakers. As you can see here, as a 30-year-old man, you have a wide range of dressing options.